"Dale Hugo . . . . The flower is about 7 inches (~18 cm) across and has a unique, 5-pointed star shape. The fragrance is to me reminiscent of gardenias. . . . , they bloom at night and fold up at dawn. The moonflower vine, botanically Ipomoea alba, is often mistaken for its cousins, the morning glory and sweet potato plant. Moonflowers contains several compounds poisonous to the human body, including atropine and scopolamine, both of which interfere with the nervous system. . . . ."